Detective Kate Beckett was recently named one of the best dressed TV characters by Entertainment Weekly, and we're not surprised. Week after week, Castle's kickass cop wows with plush designer coats, sophisticated tops, and badass boots. And it's all thanks to costume designer Luke Reichle.During Monday night's Christmas episode, "Secret Santa," Luke was at this computer tweeting up a storm about the detective's wardrobe. After testing fans with a trick question, he revealed that her brown leather coat was — surprise, surprise — Burberry, a designer we see frequently on Castle. As for her boots, this time around she wore the "big three": Robert Clergerie, Gucci, and Jimmy Choo. Only the best for Beckett!But Kate's not the only one with killer style. Alexis Castle dazzled in a plaid coat from W118 by Walter Baker Clothing ($268) and Martha strutted her stuff in a green dress designed by Josie Natori and jewelry from Laredo. Luke himself designed her velvet robe in the final scene, completing the outfit with a Tori Burch blouse, Rag & Bone pants, and Laredo jewels. For more info on Kris Kringle's red and white suit, check your local costume shop.What did you think of the cast's wardrobe in "Secret Santa"? Tell us below!

Sexy New Castle and Beckett Photos Available For Limited Purchase! (PHOTOS)